Concrete pile and similar structure



v ture inherently present in the material, is tank is employed the end of a pileis'first 76 submersion is gradually heated and dried ner as just described.

- asphalt impregnated structure the reinforcerelative movement of the ile or structure Patented June 9, 1931 I i p p 1 309 350 UNITED STATES "PATE o- -"-1 ='1(; AUGUST E. SCHUTTE, or NoRrrrnQ lp i fi ma s s p 7 CONCRETE .IIPILE AND snvrimit gametes}; i No Drawing. Application filed March 7, i928. Serial mfetassaf 7' This invention pertains to an improved Whiledescribingthe process in connection method of manufacturing water-proofed with the manufacture ofa pile, it is to be concrete structures and more particularly understood that the same process can, ob-

concrete piles. viously, be used for any structure of hydran -V The invention refers more particularly to. licfcement which it is desired to have'inx- 55 such a structure which is coated, impregpregnated with bitumen or other 'waternated or saturated with an asphaltic like proofing material. I i substance. I first form pile in the ordinary way I am aware of the fact that attempts have by mixing the aggregate of stone, sand, been made at various times to saturate or Portland cement, and water in suitable pro '60 paint such structure with an asphaltic comportions, and casting it into the required pound, or in some cases to impregnate it by shape or form with thereinforcementsthereimmersing the whole structure in heated in. ifthe same are to be employed. then u and liquefied asphalt. This, I find, however, allow the cement to set or becomefcrystaL to'be a wrong method of procedure, for, as lized until the structure has acquired the 65 a structure of this type is immersed into a necessary strength; After it has acquired its hot liquid asphalt or saturating compound, strength, the pile is then gradually, either in all the superficial pores are immediately a, vertical or horizontal position, partially closed, while, on account of the heat, moissubmerged in a vat or tank." If a vertical transformed into steam and an internal presinserted or allowed to sink into the hot as sure is created in the structure which i prephalt a short distance until all foaming, vents further saturation and, in fact, often which indicatesthe removal of the water, will cause disrup ture of the structure itself. has ceased. The steam and water, having In my process, the concrete structure, avenues of escape through the pores, crev- 7% plain or reinforced and of any form or ices, etc. of'the structure immediately above shape, after first being cured in the-ordinary the level of the asphalt, do not obstruct the way, is first partially submerged in the liquesaturation by causing pressure. As soon as fied asphalt; and, by being only partially the submerged portion has become saturated, submerged, all the avenues for the escape the structure is lowered so as to immerse of the steam, gases, etc. are not closed-but another section thereof, and so on succesare leftopen at the unsubmerged portion of sively as described until the whole pile'is the structure; thus obviating theinternal saturated. I pressure and the obstruction to proper sat- If'the process is to be proceeded with the uration. By slow and gradual submersion pile in a horizontal position, then the pile is of the object into the heated asphalt,fnot suitably supported and the asphalt is alonly are theave'nues of escape left open, but lowed to rise until successive portions of the the structure at a point immediately above pile are saturated exactlyin the same manand put into a condition particularly suit- So too with the employment of a vertical Q able for the reception and retention of the tanlrthe water-proofing materialv could be asphalt. Thus is not only the structure allowed to rise step by step around the pile water-proofed and rendered stronger but the instead .of lowering the pile step by ste reinforcements are protected by a coating into the tank and the waterproofing liquid of asphalt and being surroundedby an contained therein. In other wordsthere is a 9 ment is protected against any possible infilwith reference to the liquid.

tration of corrosive liquids. V In each and every case there is a slow'and In order to produce my structure, I progradual submergence of the structure in the ceed as follows: v asphalt or a slow and gradual rise of the t liquid with reference to the structure always having in view the object of leaving avenues of escape for the expulsion of the gases and Water.

What is claimed is:

1. The method of producing waterproofed concrete structures which comprises molding a wet aggregate; allowing the molded structure to set; causing by successive steps slow relative movement between the molded structure having moisture inherently present therein and a body of liquid waterproofing material having a temperaturesu'mcient to expel moisture from the structure, the interval between the steps being sufficient to permit, the removal of the moisture, thereby to gradually heat and dry the structure in advance of the line of submergence of the structure in the liquid. I

i 2. The method of producing waterproofed concrete structures which comprises molding a wet aggregate; allowing the molded structure to set; causing by successive'steps slow relative movement between the molded structure having moisture inherently present therein and a body of liquid Waterproofing material having a temperature suliicient to expel moisture from the structure; gradually increasing the extent of immersion, the interval between the steps being suflicient to permit the removal of the moisture, thereby to'gradually heat and dry the structure to permit steam formed therein to escape above the-line of submergence of the structure in the liquid,

Intestimony whereof I have name to this specification.

. i AUGUST E, SCHUTTE.

signed my 

